Spacing instrument.



BATENTBD AUG. 11, 1903.

4D. W. SIINSON. SPAGING INSTRUMENT.

APPLICATION FILED JULY 2l, 190,2.

2 SHEETS-SHEET VNo MODEL.

ma Noams Pzrsns cn. PHoraLlmo., WASHINGTON, Dnc,

No. 736,168. PATENTED AUG. 11, 190s.

. 1 D. w.-sTINsoN.

SPAGINGINSTRUMENT. PPPP IOATION FILED JULY 21, 1902.

Patented August 11, 1903.

Plvrniu'r OFFICE.

DAVID W. STINSON, OF ST. LOUIS, MISSOURI.

SPACING INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 736,168, dated August 11, 1903.

l Application Hed July 21, v1902. "Serial No. 116,367. (No model.)

\ the city of St.'Louis, State of Missouri, have plication to an engineers scale. longitudinal section of same.

i zo

invented certain new and useful Improvements in Spacing Instruments, of which the following is a full, clear, and exact description, reference being had to the accompanyp ing drawings, forming a part hereof.

My invention relates to certain improvements in spacing and dividing instruments, and hasfor its purpose to provide means for dividing any desired length of line into any desired number of equal spaces.

Itconsists in the novel construction and combination of the parts hereinafter fully described and claimed.

` Figure lis a top plan view showing the ap- Fig. 2 is a Fig. 3 is a vertical section on the line 3 3, Fig. 2. Figs. LI and 5 are details of construction.

My invention is applicable to the ordinary scale or may be used independently and is to be used wherever it is desired to divide any given line into any given number of equal of lazy-tongs, as shown inFigs.v 2 and 4,. The

spacing-points Gr are mounted upon the H by being pivotally connected upon one side formed by the bars H and As shown in Fig. 4, the pivotal connection of the spacing-point G is effected by the pivot 1, While the other end of the spacing-point is bars' provided with the longitudinal slot I, which serves as a guide for the pivot 2, as shown in section in Fig. 5.

The carrying-bars H terminate` and are pivoted at each end of the series to the short bars K. At the fixed extremity of the series the short bars K are pivotally fastened to the lug 3,"which is slidably mounted in the slot L. At the movable end of the series thebars K are pivoted to the bar M, which in turn is pivoted to the slide E. The pin D is rigidly fastened to the slide E and projects through the slot O.

In the use of my invention it is first necessary to select a number of equal space-pointers corresponding to the number of equal spaces given to be divided. By selecting the point so selected which is farthest from the lug 3 to the point upon the scale which indicates the total length to be divided the intervening space-pointers will indicate the equal desired number of intervening spaces.

Having now describedmyinvention, what Ic] aim as ne w, and desire to obtain by Letters Patent, is

In a device of the class named, draftingscale provided with an interior longitudinal slot containing a series of spacing-points horizontally mounted upon lazy-tongs, one end of the lazy-ton gs being fixed, and the removable 4end. being provided with a pin'projecting `through another longitudinal slot perpendicular to the slot carrying the lazy-tongs, the ends of the spacingpoints projecting through and beyond the slide of the longitudinal slot in which they are carried, and over the lines` and numbers of the scale, substantially as and for the purposes specified. t

In testimony whereof I afx my signature in presence of two witnesses.

DAVID W. STINSON.

Witnesses:

ALFRED A. EIoKs, JOHN C. HIGDON. 

